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Method and device for detecting glow ignition of an internal combustion engine in a motor vehicle

A hot ignition, internal combustion engine technology, used in engine ignition, internal combustion engine testing, machine/engine and other directions, can solve problems such as inability to identify hot ignition, achieve high resolution accuracy, and avoid damage

Active Publication Date: 2015-07-01
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of these methods is that efficient hot fire identification is not possible
In particular, identification methods based on the use of knock signals cannot detect glowing ignitions, since glowing ignitions usually occur without high-frequency parts

Method used

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  • Method and device for detecting glow ignition of an internal combustion engine in a motor vehicle
  • Method and device for detecting glow ignition of an internal combustion engine in a motor vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] exist figure 1 The method according to the invention is schematically shown in . After the measurement 1 of the time segment of the first cylinder and the at least one other cylinder, a reference signature 2 for hot ignition is formed by comparing the time segment of the first cylinder with the time segment of the at least one other cylinder. As a function of the comparison, a signal 3 for detecting a glowing ignition is subsequently generated. The signal is compared with the theoretical value 4, to what extent the theoretical value is maintained. Maintaining the theoretical values ​​7, the method according to the invention was carried out again. If the theoretical value 6 is not maintained, countermeasures 5 for hot ignition are taken, such as interrupting the fuel supply, reducing the boost pressure, reducing the fresh gas charge or cooling the corresponding cylinders. After countermeasure 5, the described method is re-implemented.

[0028] exist figure 2 The ve...

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Abstract

The invention relates to a method for detecting glow ignition of a fuel-air mixture in a combustion chamber of an internal combustion engine (12) having at least a first and a further cylinder, which are connected by a crankshaft, according to which method partial segment times of the first cylinder are measured. The method is characterized in that partial segment times of the at least one further cylinder are measured and a reference characteristic for the glow ignition is formed by a comparison of partial segment times of the first cylinder with partial segment times of the at least one further cylinder and subsequently a signal is generated for the detection of the glow ignition on the basis of the comparison.

Description

technical field [0001] The invention relates to a method and a device for detecting a glowing ignition of an internal combustion engine in a motor vehicle according to the features of claim 1 and claim 9 . Background technique [0002] "Pre-ignition" means the process concerning the uncontrolled and premature ignition of the fuel-air-mixture towards the end of the compression phase, especially in gasoline engines with high compression ratios or with supercharging, The ignition system hadn't produced an ignition spark until then. Hot ignition is a special case of pre-ignition, which occurs due to hot components inside the cylinder and without knock (Klopfpegel). The increase in temperature and pressure caused by pre-ignition or hot ignition is exacerbated by the unfinished compression in the combustion chamber. Extreme temperature- and pressure values ​​in the combustion chamber can eventually lead to the destruction of motor components. [0003] To detect pre-ignition, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D35/02F02D41/00F02D41/14G01L23/22F02D41/22
CPCG01M15/046F02D41/0097F02D41/1497F02D41/22F02D35/02G01L23/225Y02T10/40F02D35/027F02D41/1473F02P5/152G01M15/11
Inventor S.特雷贝休斯S.克利A.斯普里施S.维尔克F.陶尔
Owner VOLKSWAGEN AG
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